Add *.libsonnet per @beojan

Author: greenc-FNAL

.github/actions/detect-relevant-changes/action.yaml

@@ -53,7 +53,7 @@ runs:
         DEFAULT_TYPE_PATTERNS[cpp]=$'*.cpp\n*.hpp'
         DEFAULT_TYPE_PATTERNS[cmake]=$'CMakeLists.txt\n*.cmake'
         DEFAULT_TYPE_PATTERNS[python]=$'*.py'
-        DEFAULT_TYPE_PATTERNS[jsonnet]=$'*.jsonnet'
+        DEFAULT_TYPE_PATTERNS[jsonnet]=$'*.jsonnet\n*.libsonnet'
 
         parse_list() {
           local input="$1"